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@modelcontextprotocol/server

1 known vulnerability (1 high), with the versions each affects and the releases that fix them.

Latest release
2.4.0 (Oct 23, 2026): no advisory affects it
Newest unaffected release
2.4.0 (Oct 23, 2026), the latest release
Advisories
1 · 1 high
Weekly downloads
21.2M
Dependents
4,762
Releases
15 since 2.0.0 (Jul 27, 2026)
Registry
npm
Releases read
Nov 8, 2026

Version timeline

Every release cve.now has on record, lowest version on the left; each bar is a run of versions an advisory affects.

Advisories 1

  • MCP TypeScript SDK: HTTP server transports and handlers did not limit request body size or JSON-RPC batch length

    Affected: from 2.0.0, fixed in 2.1.0.

    Fixed in 2.1.0 (released Sep 23, 2026, 34 days before disclosure).

    The latest release, 2.4.0, is not affected.

    26% of @modelcontextprotocol/server downloads last week were affected versions (6.9M).